Consider Upcoming Nerfs When Crafting?

Hello everyone, I've finally accumulated 800 scraps or so and I'm concerned about crafting cards for an archetype that might get nerfed at some point. I imagine cdpr will let you mill nerfed cards for a refund, but that doesnt work for the cards in the deck that dont get nerfed. For example, I'm really enjoying NG but I'm just playing emiyr atm. I could craft one of the NG legendaries or a handful of silvers but if NG gets nerfed and isn't popular or viable anymore. I may have wasted all of my scraps. Any advice?